REGULATORY MATTERS - COST OF CAPITAL & FERC (Details) - California Public Utilities Commission - Forecast	24 Months Ended	36 Months Ended
	Dec. 31, 2025	Dec. 31, 2025
San Diego Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)	100.00%	100.00%
Weighted return on rate base (as a percent)	7.67%	7.18%
San Diego Gas and Electric Company | Authorized Weighting
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	45.25%	45.25%
San Diego Gas and Electric Company | Authorized Weighting | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	2.75%	2.75%
San Diego Gas and Electric Company | Authorized Weighting | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	52.00%	52.00%
San Diego Gas and Electric Company | Return on Rate Base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	4.34%	4.05%
San Diego Gas and Electric Company | Return on Rate Base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	6.22%	6.22%
San Diego Gas and Electric Company | Return on Rate Base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	10.65%	9.95%
San Diego Gas and Electric Company | Weighted Return on Rate Base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	1.96%	1.83%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.17%	0.17%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	5.54%	5.17%
Southern California Gas Company
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)	100.00%	100.00%
Weighted return on rate base (as a percent)	7.67%	7.10%
Southern California Gas Company | Authorized Weighting
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	45.60%	45.60%
Southern California Gas Company | Authorized Weighting | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	2.40%	2.40%
Southern California Gas Company | Authorized Weighting | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	52.00%	52.00%
Southern California Gas Company | Return on Rate Base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	4.54%	4.07%
Southern California Gas Company | Return on Rate Base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	6.00%	6.00%
Southern California Gas Company | Return on Rate Base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	10.50%	9.80%
Southern California Gas Company | Weighted Return on Rate Base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	2.07%	1.86%
Southern California Gas Company | Weighted Return on Rate Base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.14%	0.14%
Southern California Gas Company | Weighted Return on Rate Base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	5.46%	5.10%